You can insert symbols that are listed as internal entities in the template-specific external DTD subset.
To insert a symbol from the external DTD subset, do the following:
To call up the Insert Internal Entity Dialog, do one of the following:
Choose
.Press Ctrl-7.
The Insert Internal Entity Dialog will appear. It contains the tree of declared internal entities.
Figure 1. Insert Internal Entity Dialog.
On the Choose Internal Entity pane, click the Symbols (External DTD Subset) subtree.
The Symbols (External DTD Subset) subtree shows symbols declared as internal entities in a DTD file that is external to the edited document.
In the selected subtree, click the symbol to insert.
The Entity Content pane shows the selected symbol.
Figure 2. Symbol selected for insertion.
To insert the selected symbol, click OK.